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Precambrian

DEFINITIONS OF: Precambrian

1

n the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago

Synonyms:
Precambrian aeon, Precambrian eon, Precambrian period
Example of:
aeon, eon
the longest division of geological time
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